pdf2swf/xpdf/GString.h

   1 //========================================================================
   2 //
   3 // GString.h
   4 //
   5 // Simple variable-length string type.
   6 //
   7 // Copyright 1996-2003 Glyph & Cog, LLC
   8 //
   9 //========================================================================
  10
  11 #ifndef GSTRING_H
  12 #define GSTRING_H
  13
  14 #include <aconf.h>
  15
  16 #ifdef USE_GCC_PRAGMAS
  17 #pragma interface
  18 #endif
  19
  20 #include <string.h>
  21
  22 class GString {
  23 public:
  24
  25   // Create an empty string.
  26   GString();
  27
  28   // Create a string from a C string.
  29   GString(const char *sA);
  30
  31   // Create a string from <lengthA> chars at <sA>.  This string
  32   // can contain null characters.
  33   GString(const char *sA, int lengthA);
  34
  35   // Create a string from <lengthA> chars at <idx> in <str>.
  36   GString(GString *str, int idx, int lengthA);
  37
  38   // Copy a string.
  39   GString(GString *str);
  40   GString *copy() { return new GString(this); }
  41
  42   // Concatenate two strings.
  43   GString(GString *str1, GString *str2);
  44
  45   // Convert an integer to a string.
  46   static GString *fromInt(int x);
  47
  48   // Destructor.
  49   ~GString();
  50
  51   // Get length.
  52   int getLength() { return length; }
  53
  54   // Get C string.
  55   char *getCString() { return s; }
  56
  57   // Get <i>th character.
  58   char getChar(int i) { return s[i]; }
  59
  60   // Change <i>th character.
  61   void setChar(int i, char c) { s[i] = c; }
  62
  63   // Clear string to zero length.
  64   GString *clear();
  65
  66   // Append a character or string.
  67   GString *append(char c);
  68   GString *append(GString *str);
  69   GString *append(const char *str);
  70   GString *append(const char *str, int lengthA);
  71
  72   // Insert a character or string.
  73   GString *insert(int i, char c);
  74   GString *insert(int i, GString *str);
  75   GString *insert(int i, const char *str);
  76   GString *insert(int i, const char *str, int lengthA);
  77
  78   // Delete a character or range of characters.
  79   GString *del(int i, int n = 1);
  80
  81   // Convert string to all-upper/all-lower case.
  82   GString *upperCase();
  83   GString *lowerCase();
  84
  85   // Compare two strings:  -1:<  0:=  +1:>
  86   // These functions assume the strings do not contain null characters.
  87   int cmp(GString *str) { return strcmp(s, str->getCString()); }
  88   int cmpN(GString *str, int n) { return strncmp(s, str->getCString(), n); }
  89   int cmp(const char *sA) { return strcmp(s, sA); }
  90   int cmpN(const char *sA, int n) { return strncmp(s, sA, n); }
  91
  92 private:
  93
  94   int length;
  95   char *s;
  96
  97   void resize(int length1);
  98 };
  99
 100 #endif